Moving around in the BDV views.

Action	Key
View.
Move in X & Y.	Right-click and Drag.
Move in Z.	Mouse-wheel. Press and hold Shift to move faster, Control to move slower.
Align with XY plane	Shift Z
Align with YZ plane	Shift X
Align with XZ plane	Shift C or Shift A. For these 3 shortcuts, the view will rotate around the mouse position on the BDV.
Zoom / Unzoom.	Control + Shift + Mouse-wheel or Command + Mouse-wheel. The view will zoom and unzoom around the mouse location.
Time-points.
Next time-point.	] or M
Previous time-point.	[ or N
Bookmarks.
Store a bookmark.	Shift B then press any key to store a bookmark with this key as label. A bookmark stores the position, zoom and orientation in the view but not the time-point. Bookmarks are saved in display settings file.
Recall a bookmark.	Press B then the key of the bookmark.
Recall a bookmark orientation.	Press O then the key of the bookmark. Only the orientation of the bookmark will be restored.
Image display.
Select source 1, 2 …	Press 1 / 2 …
Toggle fused mode.	Press F. In fused mode, several sources are overlaid. Press Shift + 1 / Shift + 2 … to add / remove the source to the view. In single-source mode, only one source is shown.
Save / load display settings.	F11 / F12. This will create a XYZ_settings.xml file in which the display settings and bookmarks will be saved.

Before mid-2023, the brightness and source visibility dialogs were configured in dialogs which visibility were toggled with the F and F6 shortcuts respectively. With the new version of BDV, they are configured with a side-pane in a BDV window that can be toggled by clicking on a button made visible when the mouse hovers over the right part of the window: